WMAP

The data made available through this page has been updated. The most recent
version of this data may be accessed through
/product/map/current/

The WMAP sky maps are generated using the
HEALPix
sky pixelization scheme. The first file listed for each map contains the data
in its native HEALPix format. For the convenience of users who do not require
the capabilities that HEALPix offers, we also provide the maps in two projected
image formats: Mollweide and Zenith Equal Area (ZEA). These files contain the
string "_mollweide" and "_zea" respectively, and may be displayed with standard
astronomical display software such as DS9 and SAOImage. Note that the image
pixels typically over-sample the HEALPix pixels, thus some amount of data
replication will be present in the image data. As a result, care must be taken
when using the image data in a regime where the noise properties are important
since the statistical weight per pixel will also be replicated.

Recommended download procedure for '.fits' or '.tar.gz' files:
right click on the file name and save. For more information on the use of Dataset IDs,
see the LAMBDA Products Overview.